From 64cad92942985cb5a42a21a10b8b5dfe61c1143a Mon Sep 17 00:00:00 2001
From: stoicAI1776 <m.econyale@gmail.com>
Date: Mon, 27 Apr 2026 06:01:11 +0530
Subject: [PATCH] Fix manual session warm-up with daily bars

---
 Common/Data/Market/Session.cs    | 12 ++++++++++++
 Tests/Indicators/SessionTests.cs | 33 +++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/Common/Data/Market/Session.cs b/Common/Data/Market/Session.cs
index 35938bcf5aed..5198b2c37fa7 100644
--- a/Common/Data/Market/Session.cs
+++ b/Common/Data/Market/Session.cs
@@ -106,6 +106,18 @@ public Session(TickType tickType, SecurityExchangeHours exchangeHours, Symbol sy
         /// <param name="data">The new data to update the session with</param>
         public void Update(BaseData data)
         {
+            if (data is IBaseDataBar && data.EndTime - data.Time >= Time.OneDay)
+            {
+                var sessionBar = new SessionBar(_tickType)
+                {
+                    Time = data.Time.Date,
+                    Symbol = _symbol
+                };
+                sessionBar.Update(data, null);
+                Add(sessionBar);
+                return;
+            }
+
             _consolidator?.Update(data);
         }
 
diff --git a/Tests/Indicators/SessionTests.cs b/Tests/Indicators/SessionTests.cs
index 3a12e3674286..c42b3f4e7141 100644
--- a/Tests/Indicators/SessionTests.cs
+++ b/Tests/Indicators/SessionTests.cs
@@ -137,6 +137,33 @@ public void ConsolidatesDaily(DateTime baseDate, Resolution resolution)
             }
         }
 
+        [Test]
+        public void DailyQuoteBarsPopulateSessionDirectly()
+        {
+            var symbol = Symbols.EURUSD;
+            var session = GetSession(symbol, TickType.Quote, 10);
+            var start = new DateTime(2024, 9, 16);
+
+            for (var i = 0; i < 5; i++)
+            {
+                var time = start.AddDays(i);
+                session.Update(new QuoteBar(
+                    time,
+                    symbol,
+                    new Bar(1.10m + i, 1.11m + i, 1.09m + i, 1.105m + i),
+                    0,
+                    new Bar(1.12m + i, 1.13m + i, 1.11m + i, 1.125m + i),
+                    0,
+                    Time.OneDay));
+            }
+
+            Assert.AreEqual(6, session.Samples);
+            Assert.AreEqual(start.AddDays(4), session[0].Time);
+            Assert.AreEqual(start.AddDays(5), session[0].EndTime);
+            Assert.AreEqual(5.11m, session[0].Open);
+            Assert.AreEqual(5.115m, session[0].Close);
+        }
+
         [TestCaseSource(nameof(NextSessionTradingDayCases))]
         public void CreatesNewSessionBarWithCorrectNextTradingDay(DateTime startDate, DateTime expectedDate)
         {
@@ -173,7 +200,11 @@ private static IEnumerable<TestCaseData> NextSessionTradingDayCases()
 
         private static Session GetSession(TickType tickType, int initialSize)
         {
-            var symbol = Symbols.SPY;
+            return GetSession(Symbols.SPY, tickType, initialSize);
+        }
+
+        private static Session GetSession(Symbol symbol, TickType tickType, int initialSize)
+        {
             var marketHoursDatabase = MarketHoursDatabase.FromDataFolder();
             var exchangeHours = marketHoursDatabase.GetExchangeHours(symbol.ID.Market, symbol, symbol.SecurityType);
             return new Session(tickType, exchangeHours, symbol, initialSize);